Surface tension
Mike Mullin
Surface tension
Age Rating, Reading Level & Content Guide
by Mike Mullin
The text is written at a 8th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content has moderate intensity with some emotionally heavy themes.
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About This Book
Jake pedals hard, heart pounding, as chaos explodes around him—a plane crashes, and everything goes dark. When he wakes up, his memories have vanished, but danger lurks closer than ever. Suddenly, a shadowy figure appears with a deadly mission—what will Jake do next?
Themes
Quick Assessment
This thrilling middle-grade novel follows Jake, a boy who suffers a serious head injury after witnessing a plane crash linked to domestic terrorism. As Jake struggles with memory loss, he faces threats from a terrorist’s daughter and suspicion from law enforcement. Suitable for ages 9-12, the story explores themes of family, resilience, and bravery, with some intense moments involving violence and injury.
Why we rated Surface tension 12ME
Surface tension is written at a Level 8 reading level across 420 pages. Strong independent readers around grade 9.0 can typically handle this book on their own; with parent or teacher support, Surface tension works for readers up to grade 10.0.
We rate Surface tension as 12ME ("Moderate — Emotional") because the content sits in the "Moderate" range — moderate conflict that may involve loss, scary scenes, or interpersonal stakes. The strongest signals come from emotional weight, physical peril — these are the dimensions parents should evaluate against their reader's tolerance.
Specific content flags noted by reviewers: Concussion, Violence.
Thematically, Surface tension explores mothers and sons, single-parent families, concussion, adventure, and suspense — these threads give the book room to mean different things to different readers.
Good fit for
- ✓ Children in the Ages 9-12 range — the maturity and attention span match the story's pacing.
- ✓ Patient readers who enjoy slower, character-driven stories.
- ✓ Kids drawn to stories about mothers and sons, single-parent families, concussion.
Maybe not for
- ! Readers who get easily upset by emotional or moderately dark scenes — the conflict here is real, not just background flavor.
- ! Children who are sensitive to violence, even when handled at age-appropriate levels.
- ! Reluctant readers who need a fast hook — the pacing here rewards patience.
For Parents
Content Intensity
12ME — Moderate — EmotionalReal stakes and emotional weight. May include sustained danger, loss, or bullying.
Content Flags
Was our "Moderate" content intensity rating accurate for this book?
Reading Insights
Hook Factor
2/10A steady, thoughtful read that rewards patient readers.
Discussion Potential
2/10A lighter read — great for independent enjoyment.
Book DNA
Multi-dimensional content fingerprint
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Details
Book Length
- ISBN
- 9781939100160
- Pages
- 420
- Publisher
- Tanglewood
- Published
- 2018
- Type
- Fiction